161606010565071 has 12 divisors (see below), whose sum is σ = 233739267308872. Its totient is φ = 107595018918576.

The previous prime is 161606010565019. The next prime is 161606010565079. The reversal of 161606010565071 is 170565010606161.

161606010565071 is a `hidden beast` number, since 1 + 6 + 1 + 6 + 0 + 6 + 0 + 10 + 565 + 0 + 71 = 666.

It is not a de Polignac number, because 161606010565071 - 2¹⁸ = 161606010302927 is a prime.

It is a super-2 number, since 2×161606010565071² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161606010565079) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11860114321 + ... + 11860127946.

Almost surely, 2^{161606010565071} is an apocalyptic number.

161606010565071 is a deficient number, since it is larger than the sum of its proper divisors (72133256743801).

161606010565071 is a wasteful number, since it uses less digits than its factorization.

161606010565071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23720243030 (or 23720243027 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 45.

The spelling of 161606010565071 in words is "one hundred sixty-one trillion, six hundred six billion, ten million, five hundred sixty-five thousand, seventy-one".